A gas compressor with high sealing performance

Abstract

The application relates to the technical field of gas compressors, in particular to a high-sealing-performance gas compressor which comprises a cavity, the side wall of the cavity is fixedly installed with a plurality of uniformly-distributed compression cavities, the top of each compression cavity is fixedly installed with a cavity cover, a compression assembly is movably installed in the compression cavity, the compression assembly comprises a plunger and a sliding plunger, the plunger is slidably installed in the compression cavity, and the top of the plunger is integrally formed with a sliding cavity. Through rotation of the impeller, air enters the side wall of the cavity and rotates after entering, the heat dissipation effect of the cavity and the compression cavity during operation is improved, through opposite-direction design of the exhaust hole two and the air hole, the air is dedusted during rotation of the impeller, the purity of the air in the compression cavity is improved, through guidance of the air by the plunger and the sliding plunger, the air is air-cooled to dissipate heat for the plunger, the service life of the plunger is prolonged, and the heat dissipation effect of the plunger is improved.

Description

Technical Field

[0001] This invention relates to the field of gas compressor technology, and more particularly to a gas compressor with high sealing performance. Background Technology

[0002] With the development of industry, the requirements for the purity of compressed air are constantly increasing, especially in industries such as medical, food, and pharmaceutical, where the requirements for the purity of compressed air are extremely high. Traditional oil-lubricated compressors cannot meet the needs of these industries due to the use of lubricating oil. The emergence of oil-free compressors is precisely to meet the needs of these industries for high-purity compressed air.

[0003] An oil-free compressor is a type of compressor that does not use lubricating oil during the compression process. Its main characteristic is that no oil molecules are mixed in during the compression of air, thus providing cleaner compressed air. This type of compressor is suitable for industries with high requirements for air purity, such as medical, food, pharmaceutical, and electronics manufacturing. However, because oil-free compressors eliminate lubricating oil, they have high requirements for the working environment. They cannot effectively filter dust in the air, and the components wear out more during use, which not only leads to high operating noise but also seriously affects the stability and service life of the equipment. In addition, because there is no oil lubrication, the temperature of the oil-free compressor cannot be effectively controlled, which means that the oil-free compressor cannot be used continuously for a long time, seriously affecting its working efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by providing a gas compressor with high sealing performance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-sealing gas compressor includes a cavity, on which a plurality of uniformly distributed compression chambers are fixedly installed on the side wall. Each compression chamber is fixedly covered with a chamber cover. A compression assembly is movably installed inside the compression chamber. The compression assembly includes a plunger and a slide plug. The plunger is slidably installed inside the compression chamber. The top of the plunger is integrally formed with a sliding cavity. The slide plug is slidably installed inside the sliding cavity.

[0007] An inflation assembly is movably installed inside the cavity. The inflation assembly includes an eccentric shaft and a vent plug. The eccentric shaft is rotatably installed inside the cavity. A sliding sleeve is rotatably installed on the side wall of the eccentric shaft. A connecting rod is rotatably installed on the side wall of the sliding sleeve. The connecting rod is rotatably connected to the bottom of the plunger. The vent plug is fixedly installed inside the cavity and is located at the bottom of the compression chamber.

[0008] In the aforementioned high-sealing gas compressor, the sidewall of the plunger is provided with a second annular groove, which is located between the outer side of the sliding cavity and the inner wall of the compression cavity. The sidewall at the bottom of the sliding cavity is provided with a first annular groove, which is located outside the plunger. Several evenly distributed through holes are provided between the first and second annular grooves. The bottom of the second annular groove and the bottom of the through holes are both inclined downwards.

[0009] In the aforementioned high-sealing gas compressor, a water storage chamber is provided inside the sliding plug, a rubber sheet is provided on the top of the water storage chamber, and several evenly distributed water holes are provided on the side wall of the water storage chamber, the water holes penetrating the sliding plug into the interior of the sliding cavity.

[0010] In the aforementioned high-sealing gas compressor, the bottom of the slide plug is integrally formed with a water suction chamber, which is connected to the water storage chamber. The side wall of the plunger is integrally formed with a piston, which is slidably installed inside the water suction chamber.

[0011] In the aforementioned high-sealing gas compressor, a water tank is provided on the outer side of the cavity, and a water pipe is fixedly connected to the side wall of the water tank. A spiral water pipe is movably installed inside the cavity, and both ends of the spiral water pipe are fixedly connected to the suction chamber and the water pipe, respectively. The fixed connection between the spiral water pipe and the suction chamber is located on the side wall of the piston.

[0012] In the aforementioned high-sealing gas compressor, the connecting rod passes through the vent plug and is movably inserted into the interior of the vent plug. A sealing cover is provided between the vent plug and the connecting rod. A vent hole is provided on the side wall of the vent plug, and the vent hole is tangent to the inner wall of the cavity.

[0013] In the aforementioned high-sealing gas compressor, a fan shroud is fixedly installed on the side wall of the cavity, and an impeller is fixedly installed on the side wall of the eccentric shaft. The impeller is located between the cavity and the fan shroud. A drive motor is provided on the outside of the cavity, and the output shaft of the drive motor passes through the side wall of the cavity and is fixedly connected to the eccentric shaft.

[0014] In the aforementioned high-sealing gas compressor, the side wall of the cavity is provided with several evenly distributed exhaust holes II, the exhaust holes II are tangent to the inner wall of the cavity, the exhaust holes II correspond to the compression chamber, and the side wall of the cavity cover is provided with exhaust holes I.

[0015] Compared with existing technologies, the advantages of this invention are:

[0016] 1. This invention utilizes the cooperation between the impeller and the cavity. As the impeller rotates following the eccentric shaft, it introduces air into the cavity and drives the air to rotate, thus providing air cooling for the cavity. The second exhaust port rotates in the same direction as the air, allowing the air to exit the cavity and provide air cooling for the compression chamber. The rotation of the impeller causes air to enter through the side wall of the cavity and rotate after entering, improving the heat dissipation effect of the cavity and compression chamber during operation and avoiding the problem of excessively high temperatures in the cavity and compression chamber, which prevents them from working for extended periods.

[0017] 2. This invention, through the cooperation between exhaust port two and vent port, allows dust to adhere tightly to the inner wall of the cavity and rotate during the rotation of the air inside the impeller-driven cavity, and is discharged through exhaust port two. The vent port rotates in the opposite direction to the air, so that when air is replenished between the plunger and the vent plug, the vent port draws in dust-free air between the plunger and the vent plug for inflation. The design of exhaust port two and vent port in opposite directions allows the impeller to remove dust from the air during the air rotation process, improving the purity of the compressed air inside the compression cavity.

[0018] 3. This invention utilizes the cooperation between the plunger and the sliding plug. When the plunger moves downward, the sliding plug moves to the top of the sliding cavity. At this time, the plunger and the sliding plug separate. Air flows through the gap between the plunger and the sliding plug, passing through annular groove one, through hole and annular groove two in sequence, and then moves to the space between the plunger and the cavity cover for inflation. By guiding the air through the plunger and the sliding plug, the air can perform air cooling on the plunger, increasing the service life of the plunger and improving the heat dissipation effect of the plunger.

[0019] 4. This invention utilizes the cooperation between the water storage chamber, annular groove one, and annular groove two. When the plunger moves upward, the plunger and the sliding plug fit tightly together, increasing the pressure inside the compression chamber. At this time, the rubber sheet squeezes the water storage chamber, and the cold water inside the water storage chamber flows through the water hole to annular groove one, forming a water ring above annular groove one and annular groove two. This water ring above annular groove one improves the sealing between the sliding plug and the plunger. The water ring above annular groove two lubricates the plunger, reducing friction between the plunger and the compression chamber and noise during the plunger's operation, while also increasing the plunger's service life. As the sliding plug slides upward, the rubber sheet returns to its original position and absorbs the water ring above annular groove one. The water ring above annular groove two is evenly distributed on the inner wall of the compression chamber, accelerating the evaporation of residual water during the air cooling process of the plunger, further improving the heat dissipation effect of the plunger and the compression chamber. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2This is a cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a cross-sectional view of the compression cavity in this invention;

[0024] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 For the present invention Figure 4 Enlarged view of point C in the middle;

[0026] Figure 7 This is a cross-sectional view of the compression component in this invention;

[0027] Figure 8 This is a cross-sectional view of the plunger structure in this invention;

[0028] Figure 9 This is a cross-sectional view of the slide plug in this invention;

[0029] Figure 10 This is a disassembly diagram of the cavity and eccentric shaft in this invention.

[0030] In the diagram: 1. Cavity; 11. Fan shroud; 12. Drive motor; 121. Eccentric shaft; 122. Impeller; 13. Water tank; 131. Water pipe one; 132. Spiral water pipe; 141. Compression chamber; 142. Chamber cover; 143. Exhaust port one; 144. Exhaust port two; 21. Sliding sleeve; 211. Connecting rod; 22. Vent plug; 221. Vent hole; 222. Sealing cover; 23. Plunger; 231. Ring groove one; 232. Ring groove two; 233. Through hole; 234. Piston; 235. Sliding chamber; 24. Sliding plug; 241. Water storage chamber; 242. Water hole; 243. Water suction chamber; 244. Rubber sheet. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Reference Figure 1 - Figure 10 As shown, a high-sealing gas compressor includes a cavity 1. Several uniformly distributed compression chambers 141 are fixedly installed on the side wall of the cavity 1. A cavity cover 142 is fixedly installed on the top of each compression chamber 141. A compression assembly is movably installed inside the compression chamber 141. The compression assembly includes a plunger 23 and a slide plug 24. The plunger 23 is slidably installed inside the compression chamber 141. A sliding cavity 235 is integrally formed on the top of the plunger 23. The slide plug 24 is slidably installed inside the sliding cavity 235.

[0034] An inflation assembly is movably installed inside the cavity 1. The inflation assembly includes an eccentric shaft 121 and a vent plug 22. The eccentric shaft 121 is rotatably installed inside the cavity 1. A sliding sleeve 21 is rotatably installed on the side wall of the eccentric shaft 121. A connecting rod 211 is rotatably installed on the side wall of the sliding sleeve 21. The connecting rod 211 is rotatably connected to the bottom of the plunger 23. The vent plug 22 is fixedly installed inside the cavity 1. The vent plug 22 is located at the bottom of the compression chamber 141.

[0035] like Figure 1 , Figure 4 and Figure 10 As shown, a fan shroud 11 is fixedly installed on the side wall of the cavity 1, and an impeller 122 is fixedly installed on the side wall of the eccentric shaft 121. The impeller 122 is located between the cavity 1 and the fan shroud 11. A drive motor 12 is provided on the outside of the cavity 1. The output shaft of the drive motor 12 passes through the side wall of the cavity 1 and is fixedly connected to the eccentric shaft 121.

[0036] like Figure 1 , Figure 2 and Figure 10 As shown, the side wall of the cavity 1 is provided with several evenly distributed exhaust holes 144. The exhaust holes 144 are tangent to the inner wall of the cavity 1. The exhaust holes 144 correspond to the compression cavity 141. The side wall of the cavity cover 142 is provided with exhaust holes 143.

[0037] In this system, after the drive motor 12 is started, the drive motor 12 drives the eccentric shaft 121 to rotate, and the impeller 122 rotates with the eccentric shaft 121. This causes the impeller 122 to introduce outside air into the cavity 1 through the fan cover 11 and drive the air to rotate, thus cooling the cavity 1. The exhaust port 144 rotates in the same direction as the air, allowing the air to be discharged from the cavity 1. When the air moves to the outside of the cavity 1, it comes into contact with the side wall of the compression chamber 141, thus cooling the compression chamber 141. The rotation of the impeller 122 allows the air to enter through the side wall of the cavity 1 and rotate after entering, improving the heat dissipation effect of the cavity 1 and the compression chamber 141 during operation and preventing the cavity 1 and the compression chamber 141 from overheating and being unable to work for a long time.

[0038] like Figures 5-8 As shown, the side wall of the plunger 23 is provided with an annular groove 232, which is located between the outer side of the sliding cavity 235 and the inner wall of the compression cavity 141. The side wall at the bottom of the sliding cavity 235 is provided with an annular groove 231, which is located on the outer side of the slide plug 24. Several evenly distributed through holes 233 are provided between the annular groove 231 and the annular groove 232. The bottom of the annular groove 232 and the bottom of the through holes 233 are both inclined downwards.

[0039] When the eccentric shaft 121 rotates, the sliding sleeve 21 rotates along with it, causing the sliding sleeve 21 to drive the plunger 23 to reciprocate up and down via the connecting rod 211. When the plunger 23 moves upward, the sliding sleeve 24 moves to the bottom of the sliding cavity 235, at which point the plunger 23 and the sliding sleeve 24 are tightly fitted together, compressing the air inside the compression cavity 141. The compressed air is discharged through the exhaust port 143. When the plunger 23 moves downward, the sliding sleeve 24 moves to the top of the sliding cavity 235. At this time, the plunger 23 and the slide 24 separate. The air between the cavity 1 and the plunger 23 flows through the gap between the plunger 23 and the slide 24 in sequence through the first annular groove 231, the through hole 233 and the second annular groove 232, and then moves to the space between the plunger 23 and the cavity cover 142 for inflation. The air is guided by the plunger 23 and the slide 24, so that the air can cool the plunger 23, increase the service life of the plunger 23, and improve the heat dissipation effect of the plunger 23, thus avoiding the problem that the plunger 23 cannot work for a long time due to excessive temperature.

[0040] like Figures 5-9 As shown, the inside of the slide plug 24 is provided with a water storage cavity 241, the top of the water storage cavity 241 is provided with a rubber sheet 244, and the side wall of the water storage cavity 241 is provided with a number of evenly distributed water holes 242, which penetrate the slide plug 24 to the inside of the sliding cavity 235.

[0041] When the plunger 23 moves upward, the pressure inside the compression chamber 141 increases, causing the rubber sheet 244 to squeeze the water storage chamber 241. Cold water inside the water storage chamber 241 flows through the water hole 242 into the first annular groove 231. Once a water ring forms between the first annular groove 231 and the sliding plug 24, cold water flows through the through hole 233 into the second annular groove 232, causing a similar water ring to form between the second annular groove 232 and the compression chamber 141. The discharge of cold water from the water storage chamber 241 further enhances the sealing between the sliding plug 24 and the plunger 23, resulting in a water ring above the first annular groove 231 and the second annular groove 232. The water ring above the first annular groove 231 improves the sealing between the sliding plug 24 and the plunger 23. The square water ring lubricates the plunger 23, reducing friction between the plunger 23 and the compression chamber 141 and noise during the operation of the plunger 23, while also improving the service life of the plunger 23. As the plunger 23 moves downward, the slide 24 slides upward, the rubber sheet 244 returns to its position and absorbs the water ring above the first annular groove 231. The water ring above the second annular groove 232 is evenly distributed on the inner wall of the compression chamber 141. As air flows through the gap between the plunger 23 and the slide 24 in sequence through the first annular groove 231, the through hole 233 and the second annular groove 232, the evaporation of residual water is accelerated, further improving the heat dissipation effect of the plunger 23 and the compression chamber 141.

[0042] like Figure 1 , Figure 4 and Figures 6-9 As shown, the bottom of the sliding plug 24 is integrally formed with a water suction chamber 243, which is connected to the water storage chamber 241. The side wall of the plunger 23 is integrally formed with a piston 234, which is slidably installed inside the water suction chamber 243. A water tank 13 is provided on the outside of the cavity 1. A water pipe 131 is fixedly connected to the side wall of the water tank 13. A spiral water pipe 132 is movably installed inside the cavity 1. The two ends of the spiral water pipe 132 are fixedly connected to the water suction chamber 243 and the water pipe 131, respectively. The fixed connection between the spiral water pipe 132 and the water suction chamber 243 is located on the side wall of the piston 234.

[0043] When the plunger 23 moves downward, the piston 234 slides downward, and the slide plug 24 moves upward into the sliding chamber 235. At this time, the water storage chamber 241 and the water suction chamber 243 are under negative pressure. When the piston 234 slides downward, the spiral water pipe 132 and the water suction chamber 243 are connected to each other, so that the water suction chamber 243 draws cold water from the water tank 13 through the spiral water pipe 132 and the water pipe 131. When the plunger 23 moves upward, the slide plug 24 moves downward to the inside of the annular groove 231, the piston 234 moves upward, the spiral water pipe 132 and the water suction chamber 243 are separated, and the water storage chamber 241 and the water suction chamber 243 are under positive pressure. Through the relative sliding of the plunger 23 and the slide plug 24, the water storage chamber 241 is continuously replenished with water. At the same time, the change in pressure inside the water storage chamber 241 and the water suction chamber 243 improves the stability of cold water discharge.

[0044] like Figure 2 , Figure 3 and Figure 6 As shown, the connecting rod 211 passes through the vent plug 22 and is movably inserted into the interior of the vent plug 22. A sealing cover 222 is provided between the vent plug 22 and the connecting rod 211. A vent hole 221 is provided on the side wall of the vent plug 22, and the vent hole 221 is tangent to the inner wall of the cavity 1.

[0045] During the process of the impeller 122 driving the air inside the cavity 1 to rotate, the air discharges dust through the centrifugal force generated by the rotation, causing the dust to adhere tightly to the inner wall of the cavity 1 and rotate, and then be discharged through the exhaust port 244. The vent 221 rotates in the opposite direction to the air rotation, so that when the plunger 23 moves upward, air is replenished between the plunger 23 and the vent plug 22. The vent 221 draws dust-free air between the plunger 23 and the vent plug 22 for inflation. Through the design of the exhaust port 244 and the vent 221 in opposite directions, the impeller 122 removes dust from the air during the process of guiding the air to rotate, thereby improving the purity of the compressed air inside the compression cavity 141.

[0046] The working principle and usage of this invention are explained in detail below: After the drive motor 12 is started, the eccentric shaft 121 rotates, and the sliding sleeve 21 and impeller 122 rotate with the eccentric shaft 121. The impeller 122 introduces air into the cavity 1 and drives the air to rotate, so that the air cools the cavity 1. The air is then discharged from the cavity 1 through the exhaust port 144, so that the air cools the compression chamber 141. Through the rotation of the impeller 122, the air enters from the side wall of the cavity 1 and rotates after entering, improving the heat dissipation effect of the cavity 1 and the compression chamber 141 during operation, avoiding the problem that the cavity 1 and the compression chamber 141 cannot work for a long time due to excessive temperature. The sliding sleeve 21 drives the plunger 23 to... The plunger moves up and down repeatedly. When the plunger 23 moves upward, the slide 24 moves to the bottom of the sliding cavity 235. At this time, the plunger 23 and the slide 24 are tightly fitted together, compressing the air inside the compression cavity 141, thus increasing the pressure inside the compression cavity 141. Meanwhile, the rubber sheet 244 compresses the water storage cavity 241, and the cold water inside the water storage cavity 241 flows through the water hole 242 into the annular groove 231, forming a water ring above the annular groove 231 and the second annular groove 232. The water ring above the annular groove 231 improves the sealing between the slide 24 and the plunger 23, while the water ring above the second annular groove 232 lubricates the plunger 23, reducing friction between the plunger 23 and the compression cavity 141 and noise during the operation of the plunger 23, while also increasing the service life of the plunger 23. The compressed air inside the compression chamber 141 is discharged through the exhaust port 143. When the plunger 23 moves downward, the slide plug 24 moves to the top of the sliding chamber 235. At this time, the plunger 23 and the slide plug 24 separate. The air flows through the gap between the plunger 23 and the slide plug 24, passing through the annular groove 231, the through hole 233, and the annular groove 232 in sequence, and then moves to the space between the plunger 23 and the chamber cover 142 for inflation. The air is guided by the plunger 23 and the slide plug 24, allowing the air to cool the plunger 23, increasing its service life and improving its heat dissipation effect. As the slide plug 24 slides upward, the rubber sheet 244 returns to its position and absorbs the water ring above the annular groove 231. The water ring above the annular groove 232 is evenly distributed in the compression chamber 141. The inner wall of the impeller 122 accelerates the evaporation of residual water stains during the air cooling process of the plunger 23, further improving the heat dissipation effect of the plunger 23 and the compression chamber 141. During the rotation of the air inside the chamber 1 driven by the impeller 122, the dust adheres tightly to the inner wall of the chamber 1 and rotates, and is discharged through the exhaust port 244. The vent 221 rotates in the opposite direction to the air rotation, so that when air is replenished between the plunger 23 and the vent plug 22, the vent 221 draws in dust-free air between the plunger 23 and the vent plug 22 for inflation. The design of the exhaust port 244 and the vent 221 in opposite directions allows the impeller 122 to remove dust from the air during the air rotation process, improving the purity of the compressed air inside the compression chamber 141.

[0047] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A gas compressor with high sealing performance, comprising a cavity (1), characterized in that: The side wall of the cavity (1) is fixedly installed with a number of uniformly distributed compression chambers (141). Each compression chamber (141) is fixedly installed with a chamber cover (142) on its top. A compression assembly is movably installed inside the compression chamber (141). The compression assembly includes a plunger (23) and a slide (24). The plunger (23) is slidably installed inside the compression chamber (141). A sliding cavity (235) is integrally formed on the top of the plunger (23). The slide (24) is slidably installed inside the sliding cavity (235). An inflation assembly is movably installed inside the cavity (1). The inflation assembly includes an eccentric shaft (121) and a vent plug (22). The eccentric shaft (121) is rotatably installed inside the cavity (1). A sliding sleeve (21) is rotatably installed on the side wall of the eccentric shaft (121). A connecting rod (211) is rotatably installed on the side wall of the sliding sleeve (21). The connecting rod (211) is rotatably connected to the bottom of the plunger (23). The vent plug (22) is fixedly installed inside the cavity (1). The vent plug (22) is located at the bottom of the compression chamber (141). The plunger (23) has a second annular groove (232) on its side wall. The second annular groove (232) is located between the outer side of the sliding cavity (235) and the inner wall of the compression cavity (141). The bottom side wall of the sliding cavity (235) has a first annular groove (231) on its side wall. The first annular groove (231) is located outside the plunger (24). A number of evenly distributed through holes (233) are provided between the first annular groove (231) and the second annular groove (232). The bottom of the second annular groove (232) and the bottom of the through holes (233) are both inclined downwards. The inside of the sliding plug (24) is provided with a water storage cavity (241), the top of the water storage cavity (241) is provided with a rubber sheet (244), and the side wall of the water storage cavity (241) is provided with a number of evenly distributed water holes (242), the water holes (242) penetrate through the sliding plug (24) to the inside of the sliding cavity (235); The bottom of the slide plug (24) is integrally formed with a water suction cavity (243), which is connected to the water storage cavity (241). The side wall of the plunger (23) is integrally formed with a piston (234), which is slidably installed inside the water suction cavity (243).

2. The high-sealing gas compressor according to claim 1, characterized in that: A water tank (13) is provided on the outside of the cavity (1). A water pipe (131) is fixedly connected to the side wall of the water tank (13). A spiral water pipe (132) is movably installed inside the cavity (1). The two ends of the spiral water pipe (132) are fixedly connected to the water suction chamber (243) and the water pipe (131) respectively. The fixed connection between the spiral water pipe (132) and the water suction chamber (243) is located on the side wall of the piston (234).

3. The high-sealing gas compressor according to claim 1, characterized in that: The connecting rod (211) passes through the vent plug (22) and is movably inserted into the interior of the vent plug (22). A sealing cover (222) is provided between the vent plug (22) and the connecting rod (211). A vent hole (221) is provided on the side wall of the vent plug (22). The vent hole (221) is tangent to the inner wall of the cavity (1).

4. The high-sealing gas compressor according to claim 1, characterized in that: A fan shroud (11) is fixedly installed on the side wall of the cavity (1), and an impeller (122) is fixedly installed on the side wall of the eccentric shaft (121). The impeller (122) is located between the cavity (1) and the fan shroud (11). A drive motor (12) is provided on the outside of the cavity (1). The output shaft of the drive motor (12) passes through the side wall of the cavity (1) and is fixedly connected to the eccentric shaft (121).

5. A high-sealing gas compressor according to claim 1, characterized in that: The side wall of the cavity (1) is provided with a number of evenly distributed exhaust holes (144), the exhaust holes (144) are tangent to the inner wall of the cavity (1), the exhaust holes (144) correspond to the compression cavity (141), and the side wall of the cavity cover (142) is provided with exhaust holes (143).

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